Cognomen Siwiec (Siwiec 
, Сивец 
, Сівець ) , globally, is quite a common family name. The surname Siwiec is habitual in Eastern Europe, particularly Poland, where it is quite a rare surname, Belarus, and Ukraine, where it is a rare surname. In absolute terms, it is commonest in Eastern Europe, particularly Poland, Belarus, and Russia. Also, Siwiec is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siwiec | Canada, Poland, France, United States, Germany |
| Сивец | Belarus, Kazakhstan, Russia, Ukraine |
| Сівець | Ukraine |
| jan siwiec politician, PL (b. 1829) |
|
|
|
kunegunda siwiec PL (b. 1876) |
|
| stefan siwiec PL (b. 1863) |
|
|
| jeanette siwiec holocaust victim, b. 1874-12-28, AT (b. 1874) |
|
|
| bolesław siwiec Officer of the Polish Army, GB (b. 1893) |
|
|
| jan siwiec PL (b. 1891) |
|
|
|
marek siwiec Polish politician, PL (b. 1955) |
|
| ryszard siwiec Polish patriot, PL (b. 1909) |
|
|
|
bartłomiej siwiec Polish chess player and journalist, PL (b. 1975) |
|
| janina siwiec PL (b. 1917) |
|
|
|
natalia siwiec Polish glamour model and pop singer, PL (b. 1983) |
|
| irena siwiec PL (b. 1929) |
|
|
| tadeusz siwiec PL (b. 1950) |
|
|
| marek siwiec (b. 1950) |
|
|
| marek siwiec Polish politician and deputy, PL (b. 1964) |
|